EP 0704006 B1 19980923 - IMPROVED FORMATION IN A TWO FABRIC PAPER MACHINE
Title (en)
IMPROVED FORMATION IN A TWO FABRIC PAPER MACHINE
Title (de)
VERBESSERTE BLATTBILDUNG IN EINER DOPPELSIEBPAPIERMASCHINE
Title (fr)
AMELIORATION DE LA FORMATION DANS UNE MACHINE A PAPIER A DEUX TOILES
Publication
Application
Priority
- CA 9500209 W 19950412
- US 22632194 A 19940412
Abstract (en)
[origin: US5735330A] A forming section for a two-fabric paper machine using at least one formation blade having a shallow cavity in its top surface. The cavity is placed and dimensioned to withdraw fluid continuously from the stock, and to propel it back through the fabric and the incipient paper web into the stock so as to cause a controlled level of localized turbulence which serves to improve formation without causing excessive drainage or fines loss. The formation blade shape, in conjunction with the forming fabric tension, is configured to provide a hydraulic seal between the fabric and the stock, so that all of the withdrawn fluid is returned to the stock.
IPC 1-7
IPC 8 full level
D21F 1/20 (2006.01); D21F 1/48 (2006.01); D21F 9/00 (2006.01)
CPC (source: EP US)
D21F 1/20 (2013.01 - EP US); D21F 1/48 (2013.01 - EP US); D21F 1/483 (2013.01 - EP US); D21F 9/003 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
US 5735330 A 19980407; AT E171490 T1 19981015; AU 2211595 A 19951030; AU 681512 B2 19970828; BR 9506152 A 19960416; CA 2162126 A1 19951019; CA 2162126 C 19990427; DE 69504934 D1 19981029; DE 69504934 T2 19990401; EP 0704006 A1 19960403; EP 0704006 B1 19980923; FI 955929 A0 19951211; FI 955929 A 19951211; JP H08511589 A 19961203; WO 9527823 A1 19951019
DOCDB simple family (application)
US 66187196 A 19960611; AT 95915095 T 19950412; AU 2211595 A 19950412; BR 9506152 A 19950412; CA 2162126 A 19950412; CA 9500209 W 19950412; DE 69504934 T 19950412; EP 95915095 A 19950412; FI 955929 A 19951211; JP 52600295 A 19950412